From owner-freebsd-net@FreeBSD.ORG Wed May 8 15:54:57 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 5381EAF0 for ; Wed, 8 May 2013 15:54:57 +0000 (UTC) (envelope-from chip@2bithacker.net) Received: from mail.2bithacker.net (mail.2bithacker.net [IPv6:2001:470:1f07:202::123]) by mx1.freebsd.org (Postfix) with ESMTP id 2DA81A43 for ; Wed, 8 May 2013 15:54:57 +0000 (UTC) Received: from 2bithacker.net (nat-04-mht.dyndns.com [216.146.45.243]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: chip) by mail.2bithacker.net (Postfix) with ESMTPSA id 04CEA51A18 for ; Wed, 8 May 2013 11:54:49 -0400 (EDT) Date: Wed, 8 May 2013 11:54:46 -0400 From: Chip Marshall To: freebsd-net@freebsd.org Subject: gre and MONITOR Message-ID: <20130508155446.GB95890@2bithacker.net> Mail-Followup-To: chip@2bithacker.net, freebsd-net@freebsd.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="s/l3CgOIzMHHjg/5" Content-Disposition: inline X-OS: Mac OS X 10.8.3 x86_64 up 21 days User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: chip@2bithacker.net List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 May 2013 15:54:57 -0000 --s/l3CgOIzMHHjg/5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable It appears the MONITOR flag doesn't work on gre interfaces. I have a GRE tunnel set up between a FreeBSD 8.2-RELEASE box and a Juniper router. Config on the FreeBSD end: gre0: flags=3D4b051 m= etric 0 mtu 1476 tunnel inet 10.162.163.133 --> 10.162.163.131 inet6 fe80::20c:29ff:fe9f:de64%gre0 prefixlen 64 scopeid 0x6 inet 10.200.0.2 --> 10.200.0.1 netmask 0xfffffffc nd6 options=3D3 Config on the Juniper end: tunnel { source 10.162.163.131; destination 10.162.163.133; } family inet { address 10.200.0.1/30; } And from the Juniper, I am able to ping the 10.200.0.2 IP on the FreeBSD end of the GRE tunnel. As I understand it, this shouldn't happen with the MONITOR flag there, right? > ping 10.200.0.2 rapid PING 10.200.0.2 (10.200.0.2): 56 data bytes !!!!! --- 10.200.0.2 ping statistics --- 5 packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/stddev =3D 0.265/0.297/0.382/0.043 ms --=20 Chip Marshall http://2bithacker.net/ --s/l3CgOIzMHHjg/5 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (Darwin) iEYEARECAAYFAlGKdUYACgkQnTUxIUPEgZ4QVQCeKmEMa2iS51nXkp52PARuiCtq SJUAn0dpF6yVrTSh+dJd6oAtO8ulgT+O =3HX7 -----END PGP SIGNATURE----- --s/l3CgOIzMHHjg/5--